{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "445290",
    "entityType": "User",
    "nonce": "0x9ba1c80e8c167cd3f893a84ff42fd56570da28ca8d1a20ed2dc49a77b7cb21c2",
    "signature": "0xb72a3e0bc1aaccb739eb63d4e7915aecef7c2059eebf7be70e593e41fe854f8c2c1b4f53e3db64360672c383764b5b3aefb60dce24f73162a5b56d71cd7b41b41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}